Burglar alarm



(Model.) E. H.WARD.

u BURGLAR ALARM Y 10.249,430 Patented N0v.8,1881.

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l e e f UNITED ESTATES PATENT OFFICE -HIRAM n. WARD, or PAGKWAUKEE, WISCONSIN, ASsIeNoR. or oNnHALF 1 'ro `JOHN H. cooN, 0F SAME PLAGE.

e eoRcLAR-ALARM SPECIFICATION- forming part of Lei-.terse atent No. 249,430, dated November 8, `1881.

Application filed March 26, 11881. (Model.)

l otPackwaukee,

"or Whenthe alarm itself To all 'whom it may concern A ,Beft known that I, HIRAM HENRY WARD,f in the county of Marquette andi State'of Wisconsin, have invented a new andi Improved Burglar-Alarm, of which the follow-` ing is a specification. 1 i The object of my inventionis to provide a new and i improved apparatus for giving an? alarm in case any attempt is made to open a` door or Window to which the alarm is attached; is being tampered.V with. 1-

The invention consists in a guard foradoor` or Window formed of a cord or wire that is alternately passed over rollers on a bar rigidly attached to one sideot' the casing ot'the door or Window and over rollers on a movable `bar `held by staples tothe opposite side of thecas-` ing, so thatthe cordor wire crosses the open- Ing of the door or window casing several times,

. which movable bar is connected by cords or wires with a pivoted rod or lever, which is turned or tilted by springs acting upon it as soon `as the cords connecting with the movable bar .onthe window-casing are cut or strained, thuscausing cams on this lever to raise `anotherlever, whereby a ratchet-wheel acted upon by a clock springer weight is released androtated and `vibrates a hammerthat strikes a gong f In the accompanying drawings, Figure l is a frontelevation of my im proved burglar-alarm,

showing the manner in which it is eattached.

Fig. 2 is a longitudinal elevation of the lever connected by cords or wires with the movable bar of the guard. Fig.. 3 is a plan view of this lever and the lever for releasing the ratchet- `Wheel for operating the alarmfbell. Fig. 4 is a longitudinalelevation of the lever for holding the ratchet-Wheel. Fig. 5 is a detail perspective view lof the staple for holding the movable bar of the guard. Fig. 6 is a perspective View of a pulley for the cord or wire passing from the movable bar of the guard to the lever acting upon the lever holding the ratchet wheel. i e

Similar letters of reference indicate corresponding parts. i f

. A bar, A, provided with a series of rollers,

B, or apertures, is rigidly attached to one side of the casing C of a windowor door, and a bar, D, also provided with rollers B or apertures, is loosely held to the opposite side or post of the casing by two longitudinallyrslotted staples, E, th-e slot ofwhichis longer than the Width of the bar D, so that this bar can move in these staples in the direction of the length of their slots. A cord or wire, F, is attached to the upper end oi' the bar D, passes over the top roller, B, of the bar A, back to the bar D,

and so on, and the end of thesame is fastened to the bottom of the bar D. The lower end of this bar D is connected by a wire or cord, G, with one end of a lever, H, which turns on its axis in bearings J of a plate, K, which is pivoted on a Suitable plate, l, to permit a swinging movement of this lever Hin the plane parallel to that oi' the plate K. The lever H is provided with a bend, L, and the end of `the lever H beyond this Ybend L is connected with the movable bar D by a cord or wire, M, which only passes through an eye in theend of the lever H, and is secured to the end of a bent' Will be in a horizontal position. Aspring, P, e

with a shoulder, P', at the end, is secured to the plate K, and serves to hold the bent part of the lever H raised. A Spiral spring, Q, is attached to the base-plate I and to the lower end of the lever H, and turns this end of this lever and theplate K in a direction from the movable bar D of the guard-frame. A beveled cam, R, is fastened to the edge of the plate K, and a projecting cam, S, is fastened to the lever H, this cam S being horizontal when the bent part of the lever H is upright. The outer end of a lev'er, T, rests upon the abovemen tioned cams, whereas the inner end is pressed upward by a spring, U, and catches astud, V, on the under side of a ratchet-Wheel, W, which is acted upon by a clock-sprin g, X, or a Weight,

which ratchet-wheel oscillates an anchor, Y, and the hammer Z attached thereto when it is rotatedby the spring X or weight, and thus causes the hammer Z to strike the bell or gong A repeatedly and give the alarm. If the cord or wires M and G must be passed around a corner they are passed over a pulley, B', as shown in Fig. 6.

The operation is as follows: The lever H is turned upward and held in this position by thespring P. The rope or cord F is then drawh taut, so as to overcome the action of the sprningd Q and hold the inner edge of the bar D against the inner end of the slot of the lower staple E, whereas the outer edge of the bar D rests against the outer end of the slot of the upper staple E, as shown in Fig. 1, the cords or wiret M and Gbeing drawn taut. If a person at` telnpts to pass through the door or window he will come in contact with the cords or wires F, and will stretch the same, thus drawing the upper end of the bar D, and consequently the wire M also, in the direction of the arrow a', whereby the outer end of the bent lever N is drawn downward, and the short end'of this; lever pushes the spring P oft' of the lever H and releases the same. The spring O will nowrotate the lever on its axis, as indicated in dotted lines in Figs. l and 2. The cam Sraises the outer end of the lever T, thereby overcoming the springU and depressing the inner end of the lever T and releasing the wheel W, which is rotated by the spring X and oscil-V lates the hammer-that is, the alarm is sounded; but ifa burglar discovers the wires or cords F and does not press against them, but cuts; the cords M and G in order to be able to remove the guard, the spring Q, acts upon the lower end of the lever H and turns the same in the manner indicated by the arrow b. The beveled cam R'raises the outer end of the le'- ver T and sounds the alarm in the manner described above. The alarm may be any desired distance from the door or window, but is preferably arranged as near it as possible.

I am aware that it is not new to use a wire frame covering a door or window, and so connected to an alarm that en try cannot be effected without a great deal of noise; but

What I claim as new and of my invention 1. In a burglar-alarm, the combination, with a door or window casing, of lthe fixed bar A of an alarm apparatus connected with the movable bar, substantially as herein shown and described, and for the purpose set forth.

the movable bar D of a guard placed across the window, of the cord or wire M, the bent lever H, the bent lever N, the spring-catch P, the spring O, the cam S, the lever T, and a -spring ringing apparatus held by the lever T, substantially las herein shown and described, and for the purpose set forth.

M3. In a burglar-alarm, the combination, with the bent lever H, of the bent lever N, pivoted thereto,the spring-latch Hand the cord M,pass ing through an eye in the end of the leveryH and secured to the end of the lever N, substantially as herein shown and described, and for the purpose of releasing the lever H from the spring-catch I), as set forth.

4. In a burglar-alarm, the combination, with the movable bar ot' a'. guard placed over the window, of the cords M and G, the lever H, pivoted in a pivoted plate, K, of a lever, T, and spring bell-ringing apparatus, substantially as hereinshown and described, and for the purpose set forth.

5. In a burglar-alarm, the com bination, with the movable bar D of a window-guard,of the cord or wire G, the/lever H, pivoted to apivoted plate, K, the beveled cam It, the spring Q, the lever T, and a spring bell-ringing apparatus, substantially as. herein shown and described, and for the purpose set forth.

6. 1n a burglar-alarm, the combination, with the movable rail D of a guard placed over the window, of the cords M and G,th` e levers H and N, the springs O and Q, the pivoted plate K, the cams R and S, the lever T, and a'spring bell-ringin g apparatus, substantially as'herein shown and described, and for the purpose set forth.

HIRAM HENRY wAnpQ Witnesses:

EDGAR C. UooN, ROBERT NEALE.

or equivalent, the movable bar D, the cord or l wire F, passing from one bar to the other, and

2. In a burglar-alarm, the combination, with A 

